@article{10_4064_aa154_2_5,
     author = {Jonathan W. Sands},
     title = {$L$-functions at the origin and annihilation
 of class groups in multiquadratic extensions},
     journal = {Acta Arithmetica},
     pages = {173--185},
     publisher = {mathdoc},
     volume = {154},
     number = {2},
     year = {2012},
     doi = {10.4064/aa154-2-5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa154-2-5/}
}